# Security update for MozillaThunderbird

Announcement ID: SUSE-SU-2025:0080-1  
Release Date: 2025-01-13T15:31:02Z  
Rating: important  
References:

  * bsc#1234991

  
Cross-References:

  * CVE-2025-0237
  * CVE-2025-0238
  * CVE-2025-0239
  * CVE-2025-0240
  * CVE-2025-0241
  * CVE-2025-0242
  * CVE-2025-0243

  
CVSS scores:

  * CVE-2025-0237 ( SUSE ):  5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
  * CVE-2025-0237 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
  * CVE-2025-0238 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2025-0238 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2025-0239 ( SUSE ):  4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
  * CVE-2025-0239 ( NVD ):  4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
  * CVE-2025-0240 ( SUSE ):  4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
  * CVE-2025-0240 ( NVD ):  4.0 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
  * CVE-2025-0242 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2025-0242 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2025-0243 ( SUSE ):  5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2025-0243 ( NVD ):  5.1 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

  
Affected Products:

  * openSUSE Leap 15.6
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Workstation Extension 15 SP6
  * SUSE Package Hub 15 15-SP6

  
  
An update that solves seven vulnerabilities can now be installed.

## Description:

This update for MozillaThunderbird fixes the following issues:

Update to Mozilla Thunderbird ESR 128.6 (MFSA 2025-05, bsc#1234991)

Security fixes:

  * CVE-2025-0237 (bmo#1915257) WebChannel APIs susceptible to confused deputy
    attack
  * CVE-2025-0238 (bmo#1915535) Use-after-free when breaking lines in text
  * CVE-2025-0239 (bmo#1929156) Alt-Svc ALPN validation failure when redirected
  * CVE-2025-0240 (bmo#1929623) Compartment mismatch when parsing JavaScript
    JSON module
  * CVE-2025-0241 (bmo#1933023) Memory corruption when using JavaScript Text
    Segmentation
  * CVE-2025-0242 (bmo#1874523, bmo#1926454, bmo#1931873, bmo#1932169) Memory
    safety bugs fixed in Firefox 134, Thunderbird 134, Firefox ESR 115.19,
    Firefox ESR 128.6, Thunderbird 115.19, and Thunderbird 128.6
  * CVE-2025-0243 (bmo#1827142, bmo#1932783) Memory safety bugs fixed in Firefox
    134, Thunderbird 134, Firefox ESR 128.6, and Thunderbird 128.6

Other fixes:

  * fixed: New mail notification was not hidden after reading the new message
    (bmo#1920077)
  * fixed: New mail notification could show for the wrong folder, causing
    repeated alerts (bmo#1926462)
  * fixed: macOS shortcut CMD+1 did not restore the main window when it was
    minimized (bmo#1857953)
  * fixed: Clicking the context menu "Reply" button resulted in "Reply-All"
    (bmo#1935883)
  * fixed: Switching from "All", "Unread", and "Threads with unread" did not
    work (bmo#1921618)
  * fixed: Downloading message headers from a newsgroup could cause a hang
    (bmo#1931661)
  * fixed: Message list performance slow when many updates happened at once
    (bmo#1933104)
  * fixed: "mailto:" links did not apply the compose format of the current
    identity (bmo#550414)
  * fixed: Authentication failure of AUTH PLAIN or AUTH LOGIN did not fall back
    to USERPASS (bmo#1928026)

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * openSUSE Leap 15.6  
    zypper in -t patch openSUSE-SLE-15.6-2025-80=1

  * SUSE Package Hub 15 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP6-2025-80=1

  * SUSE Linux Enterprise Workstation Extension 15 SP6  
    zypper in -t patch SUSE-SLE-Product-WE-15-SP6-2025-80=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    * MozillaThunderbird-128.6.0-150200.8.197.1
    * MozillaThunderbird-debuginfo-128.6.0-150200.8.197.1
    * MozillaThunderbird-debugsource-128.6.0-150200.8.197.1
    * MozillaThunderbird-translations-common-128.6.0-150200.8.197.1
    * MozillaThunderbird-translations-other-128.6.0-150200.8.197.1
  * SUSE Package Hub 15 15-SP6 (aarch64 ppc64le s390x)
    * MozillaThunderbird-128.6.0-150200.8.197.1
    * MozillaThunderbird-debuginfo-128.6.0-150200.8.197.1
    * MozillaThunderbird-debugsource-128.6.0-150200.8.197.1
    * MozillaThunderbird-translations-common-128.6.0-150200.8.197.1
    * MozillaThunderbird-translations-other-128.6.0-150200.8.197.1
  * SUSE Linux Enterprise Workstation Extension 15 SP6 (x86_64)
    * MozillaThunderbird-128.6.0-150200.8.197.1
    * MozillaThunderbird-debuginfo-128.6.0-150200.8.197.1
    * MozillaThunderbird-debugsource-128.6.0-150200.8.197.1
    * MozillaThunderbird-translations-common-128.6.0-150200.8.197.1
    * MozillaThunderbird-translations-other-128.6.0-150200.8.197.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-0237.html
  * https://www.suse.com/security/cve/CVE-2025-0238.html
  * https://www.suse.com/security/cve/CVE-2025-0239.html
  * https://www.suse.com/security/cve/CVE-2025-0240.html
  * https://www.suse.com/security/cve/CVE-2025-0241.html
  * https://www.suse.com/security/cve/CVE-2025-0242.html
  * https://www.suse.com/security/cve/CVE-2025-0243.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1234991